/*
 * Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hazelcast.sql.impl.plan.node;

import com.hazelcast.sql.impl.type.QueryDataType;

/**
 * Interface to resolve field types of a single node.
 */
public interface PlanNodeFieldTypeProvider {
    /**
     * Gets the type of the operator's column at the given index (zero-based).
     *
     * @param index Index.
     * @return Type of the column.
     */
    QueryDataType getType(int index);
}
